There’s better out there but this one actually sounds as good as it looks. You can see the inside machining marks but holds reed well, in tune, nice loud pop soundStill giving 5 Star for $50

A peine jouable

Das Mundstück kam in tadellosem Zustand an. Die Qualität der Verarbeitung ist sehr gut. Das Ms spielt sehr leicht von unten bis hin in das Altissimo Register. Die Angabe des Herstellers es sei für Pop und Jazz entworfen stimmt genau. Es entwickelt ordentlich Lautstärke aber ohne unangenehm schrill zu werden. Der Sound liegt im mittleren Bereich von hell und dunkel. Wenn man Ebonit Ms spielt muss man sich etwas gewöhnen an dieses schöne Stück, was aber normal ist.Tja ... und das bei dem Preis.Gute Arbeit, Yibuy!

For the price range, It's sturdy and Nice, But has got a cranky sound, Needs a lot of Balancing while on stage and It's not at all possible with the Adrenaline rush😜....Overall, The product is good, If ignored for the small flaws

Yibuy White Metal #9 Mouthpieces ReviewOkay, with over 45 years experience I, like Sirvalorsax (checkout his review), buy and test these budget metal mouthpieces to recommend to students where appropriate and I have, among others, two Yibuy mouthpieces including this white metal jazz #9 and the gold #7. All in all I am really impressed with the manufacture quality and the speed of delivery. Turning to the white metal #9; the table is very flat and well machined as is the chamber and bore. The Yibuy is a perfect fit on my Yamaha YTS-62 tenor. The baffle is what I call a step baffle which is modestly high with an undercut tip. This makes the mouthpiece very free blowing. The tone is bright and edgy with oodles of power and projection.The high notes are very bright and the lows sing really nicely. Sub-tones are acceptable and, altissimo notes come out really easily. Overall I find the tone excellent and very controllable. I like a bright mouthpiece for Rhythm and Blues and when playing with LOUD guitars! The Rovner style ligature and cap are a nice addition!The side rails are spot on. I used a Vandoren 2.5 reed to test the mouthpiece and it was a great fit (I usually use LaVoz and Rico Orange Box reeds). The mouthpiece length is about average being longer than my Otto Link Super Tonemaster 8* and shorter than my Lawton Bronze 9BB so, tuning is spot on. The tip opening is a bit less than most 9s but you know what, there is no standard and it’s about the same as my Berg Larsen Bullet 8.Would I recommend these mouthpieces? Yes, in a heartbeat and this one has wow factor. Would I use them for gigs? Yes. Just remember that it will take inexperienced players a little embouchure adjustment to get things working properly and they’ll get you on the path to playing wider tip mouthpieces for more power and a much richer mould-able sound that will get over the loud on stage noise and, for you to be able to hear yourself from low to high notes. Be prepared to try different reeds.Footnote: These mouthpieces seem very similar in design to my Lawton’s and Berg Larsen’s although this model has an unusual shaft design, which doesn’t affect its playability at all and, in copying those and with modern CAD engineering the Chinese are turning out very consistent good quality.

Very nice for that price